That would be me who sent the conversion kit and yes, it was a prototype. We are toying with the idea of selling such a kit and we have an Amazon store opening soon which will offer individual parts and one-off promotions we come up with, but for now there is no such product. If you have a KP and want to convert it to a Kaos, PM me and I will try to work something out with you, the cost (if available) would be about $40. Again, this is not a product we sell at the moment so I cannot guarantee supply to fulfil the request... but hit me up and I will check.